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Astronomy & Astrophysics

Volume 653 (September 2021) (open volume)

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Letters to the Editor

Astrophysical processes

Cosmology (including clusters of galaxies)

Extragalactic astronomy

Galactic structure, stellar clusters and populations

Interstellar and circumstellar matter

Stellar structure and evolution

The CARMENES search for exoplanets around M dwarfs - Spectroscopic orbits of nine M-dwarf multiple systems, including two triples, two brown dwarf candidates, and one close M-dwarf–white dwarf binary A49

Published online: 07 September 2021

Stellar atmospheres

The Sun and the Heliosphere

Planets and planetary systems

Atomic, molecular, and nuclear data

Astronomical instrumentation

Catalogs and data

Numerical methods and codes